
Eurasian Eagle-Owl
Kingdom: Animalia; Phylum: Chordata; Class: Aves; Order: Strigiformes; Family: Strigidae; Genus: Bubo; Species: Bubo bubo
Family: Strigidae (Typical Owls)
- Shape
- Broadly spatulate with a rounded tip; largely symmetrical vanes typical of body plumage rather than flight feathers
- Size
- Approximately 15 cm in length as reported, which is consistent with the large scapular or upper-wing covert feathers of a bird of this magnitude
- Rarity
- Uncommon. Though the population is stable in France, they are elusive, nocturnal, and have large territories, making feather finds noteworthy
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Description
The Eurasian Eagle-Owl is a massive predator with a wingspan up to 188cm. This feather exhibits the classic 'eagle-owl' spotting—large white patches against a rufous-brown background. Known as the 'Le Grand-Duc' in France, the bird features prominent ear tufts and striking orange eyes
Colour & Pattern
Base color is a warm tawny-buff to clay-brown, marked with distinct, irregular white 'blotches' or spots on the inner and outer vanes. Darker brown horizontal mottling is present toward the tip
Barb Structure
Highly specialized; the proximal half is extremely plumulaceous (downy) for insulation, while the distal half is pennaceous but features a soft, velvety pile for silent flight
Texture & Surface
Extremely soft, silky, and matte. Lacks the oily gloss of waterfowl; the surface feels like velvet due to 'frizz' on the barbules that dampens sound
Key Features
Large size (15cm for a body feather), velvety texture, and the specific pattern of bright white semi-rectangular spots on a buffy-brown background
Habitat
Ecologically versatile but prefers rocky outcrops, cliffs, and old-growth forests offering plenty of prey and nesting ledges. Common in the crags of Bourgogne
Geographic Range
Found across much of Europe and Asia. In France, they are resident year-round, particularly in regions with suitable cliff faces or sparse woodland
Ecological Role
Apex predator. They regulate populations of medium-sized mammals and birds. Their presence indicates a healthy, complex ecosystem with sufficient prey biomass
Similar Species
Common Buzzard (Buteo buteo) feathers are stiffer and lack the velvety 'owl' texture; Tawny Owl feathers are much smaller; Great Horned Owl is North American only
Interesting Facts
It is one of the largest owl species in the world, capable of preying on animals as large as roe deer fawns or other raptors like Buzzards and Peregrine Falcons
Condition Notes
Good condition. The plumulaceous base remains voluminous. Slight separation of barbs on the right specimen indicates natural wear or stress during molting
Notes
In Bourgogne 15cm long Not a common buzzard